Desk with two desk plates

ABSTRACT

A desk has double desk-plates and one of the desk-plate capable of being lengthening and shortening to adjust positions thereof. The desk has a larger main desk plate and a secondary desk plate smaller than the main desk plate. An overlapping three-dimensional space exists between the main desk plate the secondary desk plate. Besides, the main desk plate can be pulled out and overlaps the secondary desk plate. Not only a total area for arranging objects of the desk plate of the desk increases, but also the heights of objects arranged on the desk plates are not limited strictly. The desk also has a leg assembly for supporting the main desk plate, a removable shelf connecting to a bottom of the main desk plate, a fixing shelf for connecting the removable shelf and the leg assembly, a supporting stand for connection the secondary desk plate to the fixing shelf. The desk assembled by these components has spaces on the desk plate capable being used flexibly and adequately.

FIELD OF THE INVENTION

The present invention relates to desks, in particular to a desk withdouble desk-plates and one of the desk-plate capable of being lengthenedand shortened to adjust positions thereof. Thereby, spaces around thedesk can be used flexibly and adequately.

DESCRIPTION OF THE PRIOR ART

A desk of a prior art has only one desk-plate, so a space on the desk islimited to arrange more objects. If the desk adds an extra-plane on thedesk-plate, an extra space of the extra-plane for arrange more materialsis increased. However, an overlapping space between the desk-plate andthe extra-place is limited by a height of an extra-plane, so it isinconvenient to arrange some higher objects, such as a computer monitoretc. The prior art does not fit a human-based principle.

Due to an improvement of information technology, computer peripheraldevises are increasing continuously. For arranging increasingly computerperipheral devises, a user of a desk feel quite often that an area ofthe desk is not enough. Therefore, it is necessary to design a desk witha larger desk-plate. Besides, the desk will not occupied too mush space,if not be used, so that the desk can be used flexibly.

Because of objects arranged on a main desk plate are heavier usually, amain desk plate should be noticed not only capable of being movable butalso structural strength and stability thereof. Otherwise, the main deskplate is not strong and stable enough, the desk may be damaged andobjects arranged on the main desk plate may fall from the desk afterbeing pulled and pushed enduringly.

SUMMARY OF THE INVENTION

The primary object of the present invention is to provide a desk withdouble desk-plates. The desk has a larger main desk plate and asecondary desk plate smaller than the main desk plate. An overlappingthree-dimensional space exists between the main desk plate the secondarydesk plate. Besides, the main desk plate can be pulled out and overlapsthe secondary desk plate. Not only a total area for arranging objects ofthe desk plate of the desk increases, but also the heights of objectsarranged on the desk plates are not limited strictly. The desk also hasa leg assembly for supporting the main desk plate, a removable shelfconnecting to a bottom of the main desk plate, a fixing shelf forconnecting the removable shelf and the leg assembly, a supporting standfor connection the secondary desk plate to the fixing shelf. Thereby,the main desk plate by using the connecting removable shelf is capableof being pulled out and pushed inwards.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of the desk of the present invention.

FIG. 2 is an exploded perspective view of the leg assemblies, the fixingshelf and the removable shelf of the present invention.

FIG. 3 is an assembled perspective view of FIG. 2 and connecting to themain desk plate.

FIG. 4 is an assembled perspective view of the leg assemblies, thefixing shelf, the removable shelf and the main desk plate with anarranging box of the fixing shelf.

FIG. 5 and FIG. 6 illustrate the movement of the removable shelf and themain desk plate.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

In order that those skilled in the art can further understand thepresent invention, a description will be provided in the following indetails. However, these descriptions and the appended drawings are onlyused to cause those skilled in the art to understand the objects,features, and characteristics of the present invention, but not to beused to confine the scope and spirit of the present invention defined inthe appended claims.

Referring to FIGS. 1 to 4, the present invention includes a main deskplate 1 with a larger plane area, a secondary desk plate 2 with asmaller plane area, a leg assembly 3 for supporting the main desk plate1, a removable shelf 4 connecting to a bottom of the main desk plate 1,a fixing shelf 5 for connecting the removable shelf 4 and the legassembly 3, a supporting stand 6 for connection the secondary desk plate2 to the fixing shelf 5. In addition, the original position of thesecondary desk plate 2 overlaps an above space of the main desk plate 1.

The removable shelf 4 has a pair of parallel holders 40 and 41. Theholders 40 and 41 connect respectively to two lateral sides of a bottomof the main desk plate 1. Between the two holders 40, 41 and the fixingshelf 5 is installed with a first sliding stick 42 and a second slidingstick 43 connecting respectively to the holder 40 and holder 41. Thefirst sliding stick 42 and the second sliding stick 43 are covedrespectively by a first sheath 44 and a second sheath 45. The firstsheath 44 and the second sheath 45 are shorter than the first slidingstick 42 and the second sliding stick 43. One side of the second shelter22 is fixed to the fixing shelf 5. Thereby, the holders 40 and 41 iscapable of changing positions thereof by an axial slide of the firstsliding stick 42 and the second sliding stick 43. Furthermore, the maindesk plate 1 is pulled out or pushed inwards relatively to the secondarydesk plate 2.

Two ends of the holder 40 and holder 41 are extended respectively with aconnecting sheet 401, a connecting sheet 402, a connecting sheet 411 anda connecting sheet 412 toward to a direction of the fixing shelf 5. Theconnecting sheet 401, the connecting sheet 402, the connecting sheet 411and the connecting sheet 412 serve to connect the first sliding stick 42and the second sliding stick 43 as well as prevent the first slidingstick 42 and the second sliding stick 43 sliding from the first sheath44 and the second sheath 45. A first positioning screw bolt 441 and asecond positioning screw bolt 451 (not shown). The first positioningscrew bolt 441 and the second positioning screw bolt 451 are capable ofstretching respectively into the first sheath 44 and the second sheath45, if necessary, and being contact with the first sliding stick 42 andthe second sliding stick 43 so that the first sliding stick 42 and thesecond sliding stick 43 are pressed and retained to prevent fromdisplacement thereof. The main desk plate 1 is retained after positionadjustment.

Referring to FIG. 2, between the holder 40 and the holder 41 has atleast one crossbeam 46 for supporting up the main desk plate 1. A fixingplane 461 at a reserved position of the crossbeam 46 is connected with athird sliding sheath 462 paralleling with the first sheath 44 and thesecond sheath 45. A third sliding stick 463 is sheathed into the thirdsliding sheath 462. Two ends of the third sliding stick 463 are fixedrespectively on the fixing shelf 5. When the removable shelf 4 movestowards to an axial direction, the third sliding sheath 462 slides onthe surface of the third sliding stick 463 for increasing the supportingstrength for the removable shelf 4 so as to prevent from damaging themain desk plate 1 because of movement or adjusting position thereof.

For increasing the convenience of the desk, the main desk plate 1 isseparated into three planes as FIGS. 3. The main desk plate 1 has afirst main desk plate 10, a second main desk plate 11 and a third maindesk plate 12. The second main desk plate 11 and the third main deskplate 12 are positioned respectively on a left and a right of the firstmain desk plate 10. The second main desk plate 11 and the third maindesk plate 12 are fixed respectively on the holder 40 and the holder 41of the removable shelf 4. A front edge of two lateral sides of the firstmain desk plate 10 protrudes out with two pivots 101 and 102 (not shown)towards respectively to the second main desk plate 11 and the third maindesk plate 12. The second main desk plate 11 and the third main deskplate 12 corresponding to the pivots 101 and 102 have respectively aconnecting piece 111 and a connecting piece 121 for connecting a pivotalreceiver 112 and 122 so as to sheath the pivots 101 and 102. The pivot101 is capable of moving around in the pivotal receiver 112. Thereby,the first main desk plate 10 is capable of being lifted up and beingadjusted an angle of elevation of the first main desk plate 10. A usercan use the first main desk plate 10 suitably at any proper position.

For positioning the first main desk plate 10 after adjusting an angle ofelevation, a connecting support 466 is installed on the crossbeam 46 ofthe removable shelf 4 towards to the leg assembly 3 at a verticaldirection. The other end of the connecting support 466 is connected withan air pressure tube 7. The other end of the air pressure tube 7 isconnected with a free end of the first main desk plate 10. By a motiveforce produced by the air pressure tube 7, the free end of the firstmain desk plate 10 is capable of rotating around the pivot 101 as wellas being retained at a reserved positioned.

FIGS. 5 and 6 are illustrated with a movement state of the main deskplate 1 and the removable shelf 4 of the present invention. Theremovable shelf 4 is capable of moving on the fixing shelf 5 at an axialdirection. The main desk plate 1 is pulled out, if necessary, with theremovable shelf 4 to prevent that the heights of objects placed on themain desk plate 1 are impedes by the secondary desk plate 2 to increasespaces on the main desk plate 1. If a space on the desk is not bigenough, the main desk plate 1 is pushed inwards and a space on thesecondary desk plate 2 overlapping to the main desk plate 1 also is freefor using. Thereby, spaces of the main desk plate 1 and the secondarydesk plate 2 are free for using by a proper operation.

Referring to FIG. 4, after the main desk plate 1 is pulled out, thefixing shelf 5 is exposed. In order to prevent from objects falling downon the fixing shelf 5, an arranging box 50 is installed on a hollowposition of the fixing shelf 5. A plurality of holes 51 are on a bottomof the arranging box 50. The arranging box 50 serves to put objects,such as writing materials, for a user. The holes 51 serve that computerwires or electric wires pass through the holes so as to connecting withan exterior power or any other necessary equipment.

The present invention is thus described, and it will be obvious that thesame may be varied in many ways. Such variations are not to be regardedas a departure from the spirit and scope of the present invention, andall such modifications as would be obvious to one skilled in the art areintended to be included within the scope of the following claims.

What is claim is:
 1. A desk with a double desk plates comprising: a maindesk plate with a larger plane area; a secondary desk plate with asmaller plane area; a leg assembly for supporting the main desk plate; aremovable shelf connecting to a bottom of the main desk plate, a fixingshelf for connecting the removable shelf and the leg assembly; asupporting stand for connection the secondary desk plate to the fixingshelf; and an original position of the secondary desk plate overlappingan upper space of the main desk plate.
 2. The desk with a double deskplates as claimed in claim 1, wherein the removable shelf has a pair ofparallel holders; the holders are connected respectively with lateralsides of a bottom of the main desk plate; and between the two holdershas at least one crossbeam for connecting the two holders.
 3. The deskwith a double desk plates as claimed in claim 2, wherein between the twoholders and the fixing shelf has a first sliding stick and a secondsliding stick connecting respectively with the two holders; the firstsliding stick and the second sliding stick are covered respectively by afirst sheath and the second sheath; the first sheath and the secondsheath are respectively shorter than the first sliding stick and thesecond sliding stick; and one end of the each sheath is fixed on thefixing shelf firmly.
 4. The desk with a double desk plates as claimed inclaim 3, wherein each of the two ends of the holders is extended with aconnecting sheet toward the fixing shelf so as to connect the firstsliding stick and the second sliding stick; a first positioning screwbolt and a second positioning screw bolt are installed on surfaces ofbottoms of the first sheath and the second sheath, respectively; eachthe positioning screw bolt is capable of stretching into the sheath, andbeing in contact with the sliding stick so as to fix and press thesliding stick firmly.
 5. The desk with a double desk plates as claimedin claim 3, wherein a fixing plane of the crossbeam at a reservedposition is connected with a third sliding sheath parallel with thefirst sheath and the second sheath; a third sliding stick is sheathedinto the third sliding sheath; and the two ends of the third slidingsheath are fixed on the fixing shelf firmly.
 6. The desk with a doubledesk plates as claimed in claim 2, wherein the main desk plate has afirst main desk plate, a second main desk plate and a third main deskplate; the second main desk plate and the third main desk plate arepositioned respectively on a left and a right of the first main deskplate; the second main desk plate and the third main desk plate arefixed respectively on the holders of the removable shelf; a front edgeof two lateral sides of the first main desk plate is protruded out withtwo pivots; the second main desk plate and the third main desk platecorresponding to the pivots have respectively connecting pieces forconnecting pivotal receivers so as to sheath the pivot; and each thepivot is capable of moving around in the pivotal receiver.
 7. The deskwith a double desk plates as claimed in claim 3, wherein the main deskplate has a first main desk plate, a second main desk plate and a thirdmain desk plate; the second main desk plate and the third main deskplate are positioned respectively on a left and a right of the firstmain desk plate; the second main desk plate and the third main deskplate are fixed respectively on the holders of the removable shelf; afront edge of two lateral sides of the first main desk plate isprotruded out with two pivots; the second main desk plate and the thirdmain desk plate corresponding to the pivots have respectively connectingpieces for connecting pivotal receivers so as to sheath the pivot; andeach the pivot is capable of moving around in the pivotal receiver. 8.The desk with a double desk plates as claimed in claim 6, wherein aconnecting support is installed on the crossbeam toward the leg assemblyat a vertical direction; the other end of the connecting support isconnected with an air pressure tube; the other end of the air pressuretube is connected with a free end of the first main desk plate; by amotive force produced by the air pressure tube, and a free end of thefirst main desk plate is capable of rotating around the pivot as well asbeing retained at a reserved positioned.
 9. The desk with a double deskplates as claimed in claim 1, wherein an arranging box is installed in ahollow position of the fixing shelf; and a bottom of the arranging boxhas a plurality of holes.
 10. The desk with a double desk plates asclaimed in claim 2, wherein an arranging box is installed in a hollowposition of the fixing shelf; and a bottom of the arranging box has aplurality of holes.